Gas storage cylinder



April 5, 1932.

F. w. HOGAN ET AL 1,852,348

GAS STORAGE CYLINDER Filed sept. so, 1929 325 rT20 J 25x /y Z] 32V gf fx 1` /6 x26 w /5' -ZJ /4 Z 23 'Mh 225- --zz 31a/vento@ E14/HOGAN a A. 9i/L BROOK.

Patented Apr. 5, 1932 UNITED STATES PATENT OFFICE FRANCIS W. HOGAN AND HARRY M. BULBROOK, OF FORT WORTH, TEXAS, ASSIGNORS `1 OF ONE-THIRD TO H. H. ADAMS, OF FORT WORTH, TEXAS GAS STORAGE CYLINDER Application led September 30, 1929. Serial No. 396,299.

rlhis invention relates to a gas storage cylinder, and particularly to a closure therefor adapted to permit the recharging of the cylinder and to effect a gas tight connection when the cylinder is in transportation or use.

Cylinders of this character are frequently filled with liquefied or solidified gas as a source of the gaseous charge and are subsequently sealed for the use of the expanded gas in the usual manner. An important item in the use of the high pressure cylinder or tank is to avoid the expense and delay of transporting the cylinder to a gas plant for recharging and thus elfect economy in transportation and avoid the return of empty cylinders while providing a very efficient removable closure of the cylinder.

The invention has for an object to provide a novel and improved construction of. gas storage cylinder having an exteriorly threaded open end cooperating with a cap having interior and exterior threads and a union /interiorly threaded upon both the cap and cylinder.

Another object of the invention is to present a storage tank having a neck with two threaded portions, a cap engaging one of said portions, a union engaging the cap and the other threaded portion of the neck, to-` gether with a packing ring supported at the end of the neck and contacting with the inner face of the cap.

A further object of the invention is to provide an improved packing for the cap and union including a grooved packing ring seated on the open end of the cylinder and engaged by the cap, and a contact ring seated at the upper face of the cap for engagement with a flange from the union.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings:

Figure 1 is an elevation applied:

Figure 2 is a central vertical section7 omitting the valve, and

Figure 3 is a detail elevation of the parts in .separated position, omitting the valve and union.

Like numerals of reference indicate like parts in the several figures of the drawings.

The invention is adapted for application to sion. The neck 11 of this cylinder has its portion 12 of larger diameter provided with screw threads 13 and its portion 14; of less .diameter with threads 15, While beyond the latter threads a circumferential rib 16 is provided at the open end of the cylinder.

The cap 17 is formed with a threaded aperture 18 to receive the usual high pressure valve 19, and at its exterior provided with a wrench hold face 20. Beneath this face a shoulder 21 extends circumferentially with a groove 22 to receive a projecting contact ring 23 which bears on a soft metal packing 24 within th-e groove. The depending ange 25 of the cap has an exterior threaded surface 26 and an interior surface of similar character to engage the threads 15 ofthe neck.

Interposed between the under face 27 of the cap and the cylinder end is an annular groove packing ring 28 containing a soft metal packing`29 engaging the rib 16 and flanges 30 and 31 embracing said rib.

For the purpose of clamping the parts in position a union 32 is provided with an i11- turned flange 33 seating upon the contact ring 23 and the body of the union is formed with an extended interior threaded face 34C engaging both the exterior threads 26 of the cap and the threads 13 of the neck. The outer face of the union has a wrench hold 35 and inwardly y inclined face 36 extending downward therefrom.

The general operation of the invention will be seen from the foregoing description and the cylinder is charged with solidified gas by removing the union and cap with the packing ring, after the high pressure valve is disconnected from its line. The desired amount of solidified gas is placed in thecylinder to insure a. safe pressure when in use and the cylinder closed by replacing `the ring, cap

and union. During such replacement the valve is opened to vent the accumulating gas in th-e cylinder until all connections are made tight. The valve is then closed and the cylinder ready for connection to the gas line.

The structure provided insures a gas tight closure when in `use or beingtransported, and also permits th-e convenient openingVK of the cylinder for recharging with a liquid and i1 solid gasand thus avoids-the -necessity offre'- turning the cylinder to-al gascharging plant.

Vhile the details of construction have been shown and described, the inventionis rn'ot"con` ned thereto as changes andalterationsmay be made therein without departing from the spiriti of theinvention as recited in thefollowing claims.

that we claim isz- 1. A- gas-storage containerV havingtwo sets of: exterior threads adjacent to anopen end thereof, aZ cap having exterior threads and also'lhavinginterior threads which engage oneset. of the container threads, and an interiorly threaded-union:engaging a portion ofthe outerendof; the cap. and the exterior` threadsof the cap and theother set .of-threads on the container.

2. A-.gasstorage container havingtwo sets of. exterior threads adjacent toan open end thereof, a caphavingl exterior. threads `and also/having interior threads which engage one ,set of-thecontainer threads, aninteriorlythreaded unionengaging azportion of the outer end of thecap andthe exterior threads of thecap and'fthe other set. of threads on the container, andan annular -packingring having.- a, groove containing. av packing, seated at the openend ofthe: cylinder. l

3. A gas storagecontainer having an exteriorlythreaded open end, a cap having v exteriors threadsl and.. also having. interior threadswhich engage the cylinder threads, aninteriorly threaded-union engaging the exterior threadsof` the cap and cylinder, and

s a contact ring seated in` a groove at .the upper face of the cap and engagedA by an inturned iange of theunion. Y

4.. A gas storage container havingtwo sets of exterior threads adjacent to anopen end thereof, a cap having-.exteriorfthreads and alsohavingintcrior threads which engage one set of* the .container threads, an. interiorlythreadedunion engagingsa portion of the outer 'end of the cap and-the exteriorf'threads ofthecap Aandthe other Yset: of; threads' on the container, an annularv packingv ring having a groove,containing-V a packing seated at the open-end` ofthe cylinder, and acontactring andpacking between theiupper facel of the capfand .said union.

5.` A` gasstorage cylinder having.l a neck of. different diameters, each provided with separate threads, avcap yhaving ana inner contactface-.at the :open end ofthe-cylinder and aflange threaded -to engage the lessdiameter of neck and an exterior set of threads thereon, and a union having a ange overhanging and engaging the end of the cap and an interior thread to engage the cap and larger cylinder neck.

6. The storage cylinder defined by claim -5 in whicha contact ring is seatedfin a groove the cap having interior andextcrior threads,

a contact ring seated in the groove of the cap, anda unionhaving an.inturned flange engagingk thex Contact ring and an interiorly threaded portion engaging, the cap and cyl- Vindex' neck.

9. A. gas storage container. having two .sets ofexterior threads adjacent to an openend thereof, a cap having interior threads which engage one set of the container threads, and

an interiorly threaded union engagingA the., 9

other set of threads of the container, said" union also engaging a portion ofthe cap to provide a holding means for the cap in addition to the threaded engagement. of the cap' on the first said setof container threads.

Intestimony whereof we affix our signatures.

FRANCIS W. HOGAN. HARRY BULBROOK.v 

